ABB CM572 Analog module industrial system controller

Description

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The base plate of PM8xx unit (except PM891) has two RJ45 Ethernet ports (CN1,
CN2) for connection to the Control Network, and two RJ45 serial ports (COM3,
COM4). One of the serial ports (COM3) is an RS-232C port with modem control
signals, whereas the other port (COM4) is isolated and used for the connection of a
configuration tool.
Both the electrical ModuleBus and the communication expansion bus (CEX-Bus)
connectors are mounted on the base plate. The built-in electrical ModuleBus can be
used in single CPU configuration for connecting one cluster of S800 I/O units
directly to the base plate (maximum number of units per cluster is 12). However, an
additional seven clusters (each comprising up to 12 units) can be added to the
optical ModuleBus.
The CEX-Bus is used for extending the on-board communication ports with
communication interface units. It is also possible to use redundant communication
interfaces on the CEX-Bus. The CEX-Bus Interconnection unit BC810 / BC820 is
used to increase the availability on the CEX-Bus by dividing it into separate
segments.
All base plates are provided with a unique Ethernet address which provides every
CPU with a hardware identity. The address can be found on the Ethernet address
label attached to the TP830 base plate, as shown in Figure 3 on page 25.
The PM891 unit has two RJ45 Ethernet ports (CN1, CN2) for connection to the
Control Network, and one RJ45 serial port (COM4). The COM4 port is isolated and
is used for the connection of a configuration tool.
The communication expansion bus (CEX-Bus) is mounted on the unit.
The CEX-Bus is used for extending the on-board communication ports with
communication interface units. It is also possible to use redundant communication
interfaces on the CEX-Bus. The CEX-Bus Interconnection unit BC810 is used to
increase the availability on the CEX-Bus by dividing it into separate segments.
The optical Modulebus at the bottom of the unit can be used for connecting seven
clusters of S800 I/O units (each comprising up to 12 units).
Each PM891 unit is provided with a unique Ethernet address which provides
hardware identity to the unit. The address can be found on the Ethernet address label
located on the right-hand side of the unit.